Roland MV-8800 Appendices page 41

19 Lo-Fi Processor
BitRate (Bit/Rate Down)
This algorithm changes the bit rate and sampling rate of the
source sound to produce the lo-fi sound of the first
generation of digital samplers. Arranged serially after
Bit/Rate Down are a filter that alters the tone and a noise
suppressor.
Pre Filter (Pre-Process Filter)
Value: Off, On
This is the switch of the filter placed before the Lo-Fi
processing. When set "ON," this suppresses the digital
distortion by lowering sample rates.
Sample Rate
Value: Thru, 1/2–1/32
Sets the fraction of current sample rates to be used for
processing. You set the Sample Rate parameter to
"Thru" if no change is desired.
Down to...
Value: 16–1 bit
This setting is for reducing the bit count. When this is set
to 16 bit, the bit count currently used is preserved.
Post Filter (Post-Process Filter)
Value: Off, On
This is the switch of the filter placed after the Lo-Fi
processing. Like the pre-process filter. When set "ON,"
this suppresses the digital distortion by lowering sample
rates.
Effect Level
Value: 0–100
Sets the volume of the effect sound. It is ordinarily set to
100.
Direct Level
Value: 0–100
Sets the volume of the source sound. It is ordinarily set
to 0. Raise this when you want to mix the source sound.
• Both the pre-process and post-process filters are
necessary components in general digital sound processing.
These allow the suppression of digital distortion that occurs
when the sample rate is lowered, or to allow distortion
when turned off.
• Lo-Fi is a term derived from and opposite in meaning to
Hi-Fi (high fidelity, i.e., reproduced sound that is extremely
close to the original sound). Lo-Fi processing methods that
"degrade sounds in a cool way" are currently often used
with dance music.
■ Other effect blocks
• Filter (p. 16)
• NS (Noise Suppressor) (p. 21)
Effect Block
A-41
MV-8800 Appendices